Casting #1231786 Valve diameters are 2" and 1.625" located in Central Utah. I have 2 sets one set has been cleaned the other is super dirty. No visible cracks but I haven't had them checked. I have a shop that can check them if you would like. I'm not sure what they are worth make me an offer. Shipping available on buyers dime.
1231786 are ‘70 model 455. The base model 455 (small valves) and Stage 1 (big valves) used the same base casting 1231786.
